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Light control on-load switcher

A switcher and switching switch technology, which is applied in the direction of transformers, inductors, variable inductors, etc., can solve the problems of large volume, mechanical wear, and complex structure, and achieve the effects of shortening switching time, reducing distortion, and simple structure

Inactive Publication Date: 2012-02-01
陕煤电力信阳有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a light-controlled electromagnetic starting contact as a selector contact, and a light-controlled switch without transition resistance as a switch, so as to well solve the problems of large volume, complex structure, and mechanical problems in the prior art. serious wear and tear

Method used

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  • Light control on-load switcher
  • Light control on-load switcher
  • Light control on-load switcher

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Experimental program
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Embodiment Construction

[0010] as attached figure 1 As shown, the light-controlled on-load switch of the present invention is composed of a light-controlled selector, a switch, an optical fiber and a control circuit. Among them, 1 is an optical control selector; 2 is a switch; 3 is a control circuit; 4 is an optical fiber. For the convenience of description, the attached figure 1 Only one phase of the transformer is drawn, and only the main coil and the 4-stage voltage regulating coil are drawn in one phase of the transformer. A real transformer can have several to dozens of voltage-regulating coils. A transformer with N-section voltage-regulating coils has N+1 electromagnetic starting contacts, N+1 contact drive coils, and N+1 light-controlled switches. A, A1, A2, A3, A4, and A5 are the main coil and voltage regulating coil of phase A of the transformer, and are not part of the light-controlled electronic on-load tap-changer.

[0011] in the attached figure 1 Among them, the light control select...

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PUM

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Abstract

The present invention is an on-load switcher controlled by optical signals, which is composed of an optical control selector, a switch, an optical fiber and a control circuit; The switch is composed of two sets of anti-parallel SCRs, SCR trigger circuits, light control switches and zero-crossing detectors; the control circuit is a program control circuit with DSP as the control core, which is used to generate The program control signal; the optical fiber is connected to the control circuit, and is used to transmit the program control signal generated by the control circuit to each light control switch. The present invention adopts electromagnetic start-up, has simple structure and is convenient to use; realizes non-contact switching, fundamentally eliminates the sparking phenomenon in the current switching process; cancels the transition resistance, shortens the switching time, and reduces the distortion of the voltage waveform in the switching process .

Description

technical field [0001] The invention belongs to the field of optical-mechanical-electrical integration, and relates to an on-load switcher controlled by optical signals. Background technique [0002] At present, the on-load switchers widely used at home and abroad are basically mechanical. It has been 82 years since the mechanical on-load switch was invented in 1926. Over the past 82 years, the mechanical on-load switch has been greatly improved and developed in terms of technology, structure and performance, but the mechanical on-load switch The switch has its inherent disadvantages: arcs will be generated during the voltage regulation process, and long-term operation will cause contact burnout, and the electrical life is limited to a certain extent; the voltage regulation speed is slow, it is not suitable for frequent voltage regulation, and it cannot be well adapted to power distribution The requirements for fast and frequent voltage regulation of the network; the mechan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F29/04H03K17/79H03K17/968
Inventor 张伟张志杰高爽
Owner 陕煤电力信阳有限公司